My PC meets the requirements and all that but i keep crashing on the single player, particularly on mission 2 when he is about to jump from the heli to the boat after the heli got hit. It happens every timem, same spot. I tried verifying the game cache and all that, but no luck. Zombies and multilayer never crashes.

i was having the same what worked for me is if you can underclock your graphics card a little via your fav tuner and it works without a problem ,by any chance are you using nvidia graphics cards ,im gettin it through the later missions ,ctd like mad on hati mission

It might be a long shot but try removing and reinstalling both the sound and video drivers. Has to be something in that exact spot that triggers the crash. Personally I would do the drivers and just see if that works.